title: Development of anterior inferior cerebellar artery pseudoaneurysm after gamma knife surgery for vestibular schwannoma. A case report and review of the literature.
abstract: Gamma knife surgery (GKS) is a well-established modality for controlling the progression of vestibular schwannomas. Adverse effects of this treatment are extremely rare but include cyst formation and malignant transformation. We report a case of anterior inferior cerebellar artery (AICA) pseudoaneurysm development rupture presenting as a poor WFNS grade subarachnoid haemorrhage. This is only the fourth case of aneurysm development (AICA aneurysm) following GKS reported but due to its serious nature we believe this potential complication warrants awareness in those offering this treatment.
authors.affiliation: Department of Neurosurgery, Regional Neurosciences Centre, Newcastle Upon Tyne NHS Foundation Trust , Newcastle Upon Tyne , UK.
authors.forename: Geraint
authors.initials: G
authors.lastname: Sunderland
authors.forename: Faizul
authors.initials: F
authors.lastname: Hassan
authors.forename: Priya
authors.initials: P
authors.lastname: Bhatnagar
authors.forename: Patrick
authors.initials: P
authors.lastname: Mitchell
authors.forename: Vijayam
authors.initials: V
authors.lastname: Jayakrishnan
authors.forename: David
authors.initials: D
authors.lastname: Forster
authors.forename: Alexander David
authors.initials: AD
authors.lastname: Mendelow
mesh_terms: D017541:Aneurysm, False / Q000175:diagnosis / Q000209:etiology / Q000601:surgery*; D001488:Basilar Artery / Q000473:pathology; D002536:Cerebral Arteries / Q000473:pathology*; D005260:Female; D006801:Humans; D008875:Middle Aged; D009464:Neuroma, Acoustic / Q000175:diagnosis / Q000601:surgery*; D011183:Postoperative Complications / Q000517:prevention & control; D016634:Radiosurgery / Q000009:adverse effects*
keywords: AICA aneurysm; acoustic neuroma; gamma knife surgery; pseudoaneurysm; stereotactic radiosurgery; subarachnoid haemorrhage; vestibular neurilemmoma; vestibular schwannoma